# -*- coding: utf-8 -*-#
#-------------------------------------------------------------------------------
# 建立者:        Young  
# Name:         test431
# Description:  序列元素赋值
# Author:       $赵怡蕾
# Date:         2019/1/18
#-------------------------------------------------------------------------------
# 不能给空列表赋值
# list = []
# list[0] = 20
# print(list)

# 定义一个None则可以
list = [None]
list[0] = 20
print(list)


